Salon and Barbershop Plumbing in Phoenix

For a salon owner, the plumbing rules that come up most often aren't in a plumbing code at all. They're in the Arizona Board of Cosmetology's infection control rule, A.A.C. R4-10-112, and inspectors read them literally.

• Hot and cold water. The establishment, including a mobile unit, must have sufficient hot and cold running water.
• Shampoo bowls. Bowls are cleaned and disinfected, kept in good repair, and the drains have to be free running. A slow bowl doesn't meet that rule.
• Restroom. One restroom open to staff and clients during business hours, with a wash basin, running water, liquid soap and disposable towels.

Pedicure tubs get their own drain and disinfect routine in the same rule, so a tub that drains slowly slows down every turnover. Keep the drains moving and the inspection is easy.

Hair is to a salon what grease is to a restaurant. It wraps around the crossbar of a shampoo bowl drain, catches conditioner and product residue, and builds a mat that slows the line a little more each week. Chemical drain openers usually move the clog down the pipe instead of out of it.

Here's what works. A basket strainer at each bowl, emptied daily. A hair interceptor under the shampoo bowls when the line runs long or keeps clogging. And hydro jetting the branch line when the same bowls back up again and again, since a snake punches a hole and leaves hair stuck to the pipe wall. See why the same drain keeps clogging.

On septic, traps aren't optional. Maricopa County's environmental health code requires hair and lint traps on drains connected to an onsite wastewater system for hair salons. On city sewer, the plumbing code's general rule applies: interceptors are provided to keep substances harmful to the sewer out of it, and in Phoenix the authority having jurisdiction approves their size, type and location.

A busy salon runs hot water in short, steady bursts all day: shampoo after shampoo, pedicure fills, towel laundry and cleanup. That pattern exposes an undersized or scaled-up water heater fast. The usual signs are lukewarm bowls by mid-afternoon, long waits for hot water at the back bowls, and a tank that rumbles.

The fix depends on the numbers. Count the bowls, pedicure chairs and washers, look at how many run at once, then size the heater, or a pair of heaters, for that peak. A recirculation line can cut the wait at far bowls. See types of commercial water heaters and not enough hot water in a commercial building.

Plan on a permit when you replace one. Phoenix's permit exemption for an in-kind water heater swap covers one- and two-family dwellings only, not a salon suite.

Color bars, laundry soap feeders and cleaning chemical dispensers often tie straight into the water line. The 2024 IPC requires the water supply to be protected against backflow wherever a chemical dispenser connects, and dispenser backflow devices must meet ASSE 1055 or use an air gap fitting. Without that, a pressure drop can pull chemical-laced water back into the building's drinking water.

The building's own service may need protection too. Most Valley salons sit in strip centers, and Phoenix requires a reduced pressure (RP) assembly where one water service feeds more than one tenant. Each assembly is tested at least once a year by a certified tester. Here's what backflow is and RPZ vs double check.

Adding shampoo bowls or pedicure chairs changes the plumbing, and Phoenix requires a permit before plumbing is installed, altered or replaced. Plan the drains before the chairs: each bowl needs its own trap and a drain sized for the flow, pedicure chairs need hot and cold supplies and a drain, and the water heater has to keep up. If the suite was retail, check whether the building sewer and the water service can carry the new load. Start with commercial tenant improvement plumbing and the Phoenix TI permit page.

We clear shampoo bowl and pedicure drain lines, jet branch lines packed with hair, install hair interceptors, and install and replace water heaters. We also replace backflow assemblies, run gas lines, and camera and repair sewer lines. Work can happen before opening or after close, and we're available 24/7. You get an upfront price before work starts.